Network Shield blocking Legitimate Site as Malicious URL

I have been going to McAfee Stinger Lab web site for over a year now to download the latest Stinger Standalone AnitVirus app update. I have not had any problems until now. It blocks the site with a “Malicious URL Blocked”.
Object: http://download.nai.com/products/mcafee-avert/stinger10101096.exe

Does anyone know what this about? McAfee is legitmate security software company and up until now, I have had no problems with this site.

regards and thanks
johnb

It has been already reported in another post.
One of the avast! team members said that it is a false positive.
I tried it and it seems that it is fixed now! It is fixed in VPS 101104-1.

See this:
http://forum.avast.com/index.php?topic=65860.0

Also downloaded and installed with no problems or alerts at all.
And i have my Avast! with advanced settings.

Database version:
101104-1